RPM Hurricane adds spin, control, and durability to your game at an affordable price. If you hit big from the baseline, you’ll love the heavy spin you can hit as you wear down the competition. Your strings are the engine of your racquet. Half of your racquet’s performance comes from your strings. Which means choosing the right string is important. We invented tennis string in 1875. And we’ve been innovating ever since, so you can play your best and enjoy the game more than ever.